bofinger



(No Model.) 3 Sheets-Sheet 1.

G. BOPINGER.

TYPE WRITER GIPHOGRAPH-A No. 396,529. Patnted Jan. 22, 1889.

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V ATTORNEYS.

(No-Model.) 3 Sheets-Sheet 2.

G. BOFINGER.

TYPE WRITER GIPHOGRAPH,

No. 396,529. Patented Jan. 22, 1889.

3 SheetsSheet 3.

(No Model.)

G. BOPINGER.

TYPE WRITER OIPHOGRAPH,

No. 396,529. Patented Jan. 22, 1889.

INVENTOR:

WITNESSES:

By Att PETERS, mvumo m me. Walhington, D. c.

UNITED STATES PATENT OFFICE,

GUSTAV BOFTNGER, OF NEW YORK, N. Y.

TYPE-WRITER Cl PHOG RAPHi SPECIFICATION forming part of Letters Patent No. 396,529, dated January 22, 1889.

Application filed February 28, 1867. Serial No. 229,074. (No model.)

To (LIZ who/1t "it may 8071(fl'l7b.

Be it known that I, GUSTAV llorixomi, a citizen of the United States, residing at New York, in the county of Xew York and State 1 of New York, have invented a new and usetul Type-\Vriter (.iphograph, ot' which the following is a specification.

The object of this invention is to provide a simple and convenient; attachment t'or typewriting machinessuch as the Remington,

Hammond, and ot-hers-whercby comm till icaol' the normal and cipher key-boards for trans lating the word in into cipher. Fig. 6 illust-rat es the relative posititmsot the keys of the normal and decipher key-boards lor retranslating the cipher oi the word in into its original form.

Similar numerals oi, reference indicate corresponding parts in the different figures.

In the ordinary key-board of a type-writ- 1 ing machine the indicating letter or character tions or documents in ordinary text may be below the keys indicating the letters which i are on the impression-types actuated by the respective keys, the letters on the types correspending with the letters on the keys. Fig. L illustrates a liragment ol :1 ciphering keyboard, in which the letters or characters on the respective keys dit'ter from the letters or characters on the correspom'ling impressiontypes, the letters below the keys indicating the letters on the correspomling types. Fig. 3 shows a fragment of a deciphering keyboard, in which, also, the letters or eln'iracters on the-respective keys differ from the letters or characters on the corresponding types, the relative arrangement of the letters or characters being the reverse ot their arrangement on the ciphering key-board. Fig. 4: is a perspective view of a ciphering key-board applied to a Remington type-writing machine. Fig. 5 is a perspective view of a deciphering key-board adapted for ap 'ilication to a Remington type-writer, the letters or chamcters being arranged to correspond inversely with the arrangement of the letters or charact rs on the eipheringkey-board shown in Fig '2, whereby the deciphcri ug key-boa rd is ad apted for translatin g into the original text the cipher produced by the ciphering-board. Fig. 6 is a transverse section cut through the plane in Fig. 4 occupied by the keys N l \V B of the ciphograph key-board. Fig. 7 is a diagram illustrating the relative position of the keys key, on which the auxiliary key rests.

on each key eorrcs nnnls with the letter or chz'trapter on the i|npression-tvpe actuated by that key, as illustrated in Fig. l, whereby the o] crator in using the keys according to the original text of the manuscript or copy will repri'nlnce on the printed sheet the identical text of said copy.

in this improved type-writer ciphograph the indicating letters or characters of the ciphographie alphabet are disposed on tingerpieces in abnormal relation to the letters or characters of the im1n'ession-types ol the machine. l n a k ey-board type-writer constructed according to this invention the letter or character on each key is ditlerent from the letter or character on the impression-type ati-ti'tated by that key. as indicated in Figs. 2 to 8, the letters or characters on the keys of the cipher key-board being arranged abnormally to produce any arbitrary combinations on the printed sheet, and the letters of the decipher key-board being arranged abnormally to the keys on the imp ressiondypes, but: in correspondence inversely with the letters on the cipher key-bozu'd.

In its application to a Remington typewriting machine this improved ciphographic attachment comprises a detachable frame or casing, preferably composed of sheet metal and adapted for adjustment over the normal i key-boz'trd of said machine. A series of tingerpieces, in the form in this instance of vertically-movable auxiliary keys 2, pass through holes in said casing and rest at their lower ends on the keys 13 ot the normal key-board, bein preferably providetjl, respectively, with anti-friction rollers 4. Each of these auxiliary keys is provided on its upper face with an indicating letter or character which differs from the letter or character 011 the normal The auxiliary keys of the cipher key-board are arranged according to any cipher agreed upon between the parties communicating in cipher, and the keys of the decipher key-board are arranged in such relation as to retranslate the cipher produced by the corresponding cipher key-board into the original text. Separate [frames and separate sets of auxiliary ke s maybe used for the cipher and decipher keyboard, or the same frame and the same set of auxiliary keys may be used both for ciphering and deciphcrin by rearranging the auxiliary keys on the frame to form either a cipher or a decipher board.

Figs. 7 and 8 illustrate the translations of the Word in into cipher and its retranslation into its original letters. The operator, having this word before him on the mannscript to be copied, or having it given him by the person dictating, will use the keys of the auxiliary cipher key-board correspomling to the proper spelling of the word, and by depression of these keys the cipher VB will be produced 011 the printed sheet by the impression-types of the type-writing machine. The receiver of this cipher will use a ciphograph having its auxiliary keys arranged as a decipher key-board, and will strike successively on said decipher-board the keys having, respectively, the letters V and B,in accordance with the cipher on the printed sheet before him, and these auxiliary keys will actuate the normal keys, having, respect ively, the letters I and N, and consequently the ii'npression-types having the same letters produce the word in on the printed sheet in the type-writing machine. Thus the of the cipher employed.

comparatively simple means, documents and other communications can be printed in cipher from the original text by an operator without knowledge of the cipher, and may be reproduced in the original text on a typewriting machine by an operator ignorant of the cipher. For many business purposes this is a great advantage, especially as the ciphering can be accomplished by the type-writing machines in general use, and an almost unlimited number of dillerent cipher combinations can be made with tlmlelters and tigu res of a type-writing machine.

I claim as my invention- 'l. The combination, with the actuatingkeys of a type-writing machine, of fingerpieces provided with indicating letters or characters disposed in abnormal relation to the normal keys.

2. The combination, with the key-board of a type-writing machine, of an auxiliary keyboard, the keys of the auxiliary key-board being provided with indicating letters or characters which are disposed in abnormal relation to the keys of the normal key-board.

3. A ciphographic attachment for a type- Writing machine, consisting of a t'rame or casing for adjustment over the key-board of a type-writing machine, and a series of auxiliary keys supported in said casing, and provided with indicating letters or characters which are disposed in abnormal relation to the keys of the ordinary key-board.

In testimony that I claim the foregoing as my invention I have signed my name in presence of two subscribing witnesses.

GUST. BOFINGER.

\Vitnesses:

PAUL GoEPEL, MARTIN PETRY. 

